LAN9730 Datasheet, PDF (118/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
FIGURE 5-2:
PME OPERATION
Host & Chipset Powered Off
EC Sets PME_MODE_SEL = 1 And
Pulses PME_CLEAR Low
Device Has EEPROM With GPIO
PME Enable =1, Enters PME Mode
Wakeup Event Detected
By Device?
True
Device Asserts PME
False
EC Detects PME
EC To Wake System To
Process Wakeup Event?
No
EC Asserts PME_CLEAR
Device Resets And Deasserts PME
Yes
EC Signals Enable To Host
EC Sets PME_MODE_SEL = 0 And
Asserts PME_CLEAR
Device Resets And Deasserts PME
Device Connects To USB Bus
Device Is In Normal Operation
DS00001946A-page 118
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